2001-09-02  Miguel de Icaza  <miguel@ximian.com>

	* Moved BooleanSwitch, Switch, TraceLevel and TraceSwitch to the
	System assembly.

	* Added StackFrame.cs and StackTrace.cs to the build.

2001-08-21  Nick Drochak <ndrochak@gol.com>

	* Implemented ConditionalAttribute.cs and DebuggableAttribute.cs
	
2001-08-29  Alexander Klyubin <klyubin@aqris.com>
  
	* Skeletal implementation of StackFrame and StackTrace classes.
	The classes must be somehow connected to runtime environment in
	order to generate proper traces.